CVE-2026-74040Public exploitNetwork attack vector

Root code execution via unchecked configuration overwrite

Published Oct 13, 2026 · Updated Oct 13, 2026

File overwrite in Wazuh manager before 4.14.8 allows remote authenticated users to execute root commands through cluster synchronization. MasterHandler.process_files_from_worker checks raw basenames before path normalization and omits extra_valid enforcement, permitting overwrites of ossec.conf and agent.conf. Attackers must control a worker and hold the shared cluster key; malicious configuration executes on manager reload and propagates to enrolled agents.

CVSS severity9.1
Critical
EPSS probability0.55%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File overwrite in Wazuh manager before 4.14.8 allows remote authenticated users to execute root commands through cluster synchronization. MasterHandler.process_files_from_worker checks raw basenames before path normalization and omits extra_valid enforcement, permitting overwrites of ossec.conf and agent.conf. Attackers must control a worker and hold the shared cluster key; malicious configuration executes on manager reload and propagates to enrolled agents.

The record

CVE
CVE-2026-74040
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Wazuh
Product
Wazuh manager
Classifications
CWE-668, CWE-706, CWE-94, CWE-22, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.9.0 <4.14.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wazuh · Wazuh managerversion=3.9.0 <4.14.8

Published CVSS scores

9.1WazuhCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
CWE-706Use of Incorrectly-Resolved Name or Reference
CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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